Question

A man of $60kg$ gains $1000$ Cal of heat by eating $5$ mangoes. His efficiency is $56$%. To what weight he can jump by using this energy?

• A. $4m$
• B. $20m$
• C. $28m$
• D. $0.2m$

Answer 1

The correct option is A $4m$

After eating $5$ mangoes energy gain $=1000Cal$
Efficiency $=5.6$%
Energy can be utilized =Efficiency $\times$ 5
$=560Cal$
$=2352J$
Now, $mgh=2352$
$h=\frac{2352}{60\times 9.8}=4m$